chore: remove remaining Hetzner references across codebase

Deleted:
- DOCKER_REGISTRY_SETUP.md, QUICK_START_CICD.md (legacy CI/CD docs)
- docs/ULOAD-DEPLOYMENT.md (Hetzner VPS deployment guide)
- scripts/get-ssh-key.sh, scripts/remove-coolify-references.sh (legacy scripts)

Updated Hetzner → MinIO references in:
- shared-storage (package.json, README, client.ts, types.ts)
- App CLAUDE.md files (mukke, storage, planta, picture)
- .claude/GUIDELINES.md, sveltekit-web.md guideline
- TROUBLESHOOTING.md, SETUP_TEMPLATES.md (replaced IPs with placeholders)
- GIT_WORKFLOW.md, COMMANDS.md
- services/matrix-project-doc-bot/CLAUDE.md

Remaining Hetzner mentions are in historical devlogs/audits and docs
that list Hetzner as a hosting alternative (not as active infrastructure).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

packages/shared-storage/src/client.ts

@@ -46,9 +46,7 @@ function constrainStream(stream: ReadableStream, maxBytes: number): ReadableStre
 			bytesRead += value.byteLength;
 			if (bytesRead > maxBytes) {
 				controller.error(
-					new Error(
-						`Stream size ${bytesRead} bytes exceeds maximum allowed ${maxBytes} bytes`
-					)
+					new Error(`Stream size ${bytesRead} bytes exceeds maximum allowed ${maxBytes} bytes`)
 				);
 				reader.cancel();
 				return;
@@ -62,7 +60,7 @@ function constrainStream(stream: ReadableStream, maxBytes: number): ReadableStre
 }
 
 /**
- * S3-compatible storage client for MinIO (local) and Hetzner Object Storage (production)
+ * S3-compatible storage client for MinIO
  */
 export class StorageClient {
 	private client: S3Client;

packages/shared-storage/src/types.ts

@@ -4,7 +4,7 @@
 export interface StorageConfig {
 	/** S3 endpoint URL (e.g., http://localhost:9000 for MinIO) */
 	endpoint: string;
-	/** S3 region (e.g., 'us-east-1' or 'fsn1' for Hetzner) */
+	/** S3 region (e.g., 'us-east-1') */
 	region: string;
 	/** Access key ID */
 	accessKeyId: string;